Table 2.

Human cells and tissues with demonstrated CCR4 expression

Cells expressing CCR4 in humans	Reference(s)
Type 2 helper cells (Th2)	[5, 180, 181]
CLA+ T cells	[77, 182]
Type 2 polarized CD8+ T cells (Tc2)	[183, 184]
Regulatory T cells (Tregs)	[80, 185]
T helper 17 cells (Th17)	[186]
T helper 22 cells (Th22)	[187]
Type 2 innate lymphoid cells (ILC2s)	[70, 188, 189]
Airway eosinophils (AA patients)	[32]
Airway mast cells (AA patients)	[190]
Plasmacytoid DCs (AA patients)	[191]
Conventional DCs (AA patients)	[192]
Airway epithelial cells (BEAS-2B, A549 cell lines)	[193]